body {
	font-size: 14px;
	text-align: center;
}

.wrapper {
	width: 600px;
	margin: 0 auto;
	border: 1px solid #ddd;
	position: relative;

}

.itemBox{
	width:600px;
	overflow: hidden;
}

.itemBox li {
	float: left;
	width: 149px;
	height: 50px;
	line-height: 50px;
	text-align: center;
	font-size: 18px;
	border-bottom: 1px solid #ddd;
	border-left: 1px solid #ddd;
	cursor: pointer;
}

.itemBox li:first-child {
	border-left: none;
	padding-left:1px ;
}

.itemBox li.on {
	background-color: greenyellow;
}

.contentBox {
	overflow: hidden;
	width: 600px;
	height: 800px;
	position: relative;
}

.contentBox li {
	float: left;
	width: 565px;
	padding: 10px 0px 10px 10px;
	display: none;
	position: absolute;
	>position: relative;
	overflow: hidden;
	top: 0 ;
	left: 0;
}
.contentBox li img{
	width:600px;
	height: 400px;
}
.contentBox li:first-child {
	display: block;
}

#title {
	text-align: center;
}

#content {
	text-indent: 2em;
	>text-align: left;
	text-align: justify;
}

.track {
	width: 15px;
	height: 795px;
	position: absolute;
	right: 1px;
	top: 52px;
	border: 1px solid #F1F1F1;
	border-right: none;
	border-radius: 10px;
	background-color: #F1F1F1;
}

.scrBar {
	width: 15px;
	height: 50px;
	box-shadow: 0px 0px 2px 2px #DDD;
	background-color: #fff;
	border-radius: 10px;
	cursor: pointer;
	position: relative;
	left: 0;
	top: 0;
}

#up,#down{
	width: 50px;
	height: 30px;
}
